Long-term Debt (Details) - USD ($)				3 Months Ended
	Jun. 06, 2022	May 19, 2022	Apr. 21, 2022	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2022	Dec. 29, 2021	Mar. 31, 2015
Long-Term Debt
Proceeds from long-term debt borrowings				$ 50,000,000
Debt obligations
Total debt obligations				663,661,824		$ 670,020,444
Less: deferred financing fees				6,625,637		7,257,486
Total				657,036,187		662,762,958
Presented as follows:
Current portion of long-term debt				51,929,438		72,075,571
Long-term debt-net of current portion and deferred financing fees				605,106,749		590,687,387
Total				657,036,187		662,762,958
Deferred financing fees
Deferred finance fees, beginning				7,257,486
Additions				277,198
Amortization				(909,047)	$ (689,841)
Deferred finance fees, end				6,625,637
2015 Facility
Long-Term Debt
Original loan amount								$ 758,000,000
Repayment of debt		$ 20,000,000.0	$ 25,000,000.0
Debt obligations
Total debt obligations				158,656,981		206,381,274
Commercial Financing
Long-Term Debt
Repayment of debt			11,100,000
Debt obligations
Total debt obligations				71,596,370		91,651,888
KEXIM Direct Financing
Long-Term Debt
Repayment of debt			11,100,000
Debt obligations
Total debt obligations				29,087,824		44,406,733
KEXIM Guaranteed
Debt obligations
Total debt obligations				40,158,551		47,190,358
K-sure Insured
Long-Term Debt
Repayment of debt			$ 2,800,000
Debt obligations
Total debt obligations				17,814,236		23,132,295
Japanese Financings
Debt obligations
Total debt obligations				425,273,808		382,064,998
Corsair Japanese Financing
Debt obligations
Total debt obligations				36,833,334		37,645,833
Concorde Japanese Financing
Long-Term Debt
Cash consideration payable for vessel repurchase	$ 41,200,000
Notice period for vessel repurchase	3 months
Deposit retained by buyer used for purchase payment	$ 14,000,000.0
Debt obligations
Total debt obligations				41,461,538		42,269,231
Corvette Japanese Financing
Long-Term Debt
Cash consideration payable for vessel repurchase	$ 42,200,000
Notice period for vessel repurchase	45 days
Deposit retained by buyer used for purchase payment	$ 14,000,000.0
Debt obligations
Total debt obligations				42,000,000		42,807,692
Cresques Japanese Financing
Debt obligations
Total debt obligations				44,805,000		45,660,000
Cratis Japanese Financing
Debt obligations
Total debt obligations				48,640,000		49,660,000
Copernicus Japanese Financing
Debt obligations
Total debt obligations				48,640,000		49,660,000
Chaparral Japanese Financing
Debt obligations
Total debt obligations				64,093,936		64,662,242
Caravelle Japanese Financing
Debt obligations
Total debt obligations				48,800,000		49,700,000
Cougar Japanese Financing
Long-Term Debt
Value of vessel transferred		$ 70,000,000.0
Term of Charter Agreement		10 years
Period until purchase option exercisable		3 years
Proceeds from Sale of Property, Plant, and Equipment		$ 50,000,000.0
Deposit retained by buyer used for purchase payment		20,000,000.0
Repayment of debt		$ 20,000,000.0
Loan term period		10 years
Financing cost to be incurred		$ 400,000
Monthly brokerage commission (as a percent)		1.25%
Brokerage commission fee on exercised purchase option (as a percent)		0.50%
Periodic principal payment amount		$ 900,000
Balloon payment amount		$ 14,000,000.0
Debt obligations
Total debt obligations				50,000,000
BALCAP Facility
Long-Term Debt
Original loan amount							$ 83,400,000
Debt obligations
Total debt obligations				$ 79,731,035		$ 81,574,172
SOFR | Cougar Japanese Financing
Long-Term Debt
SOFR adjustment term		3 months
Margin added to SOFR for interest rate on loan facility (as a percent)		2.45%